I wasn't sure how many people would find it useful, but I have been working on a feature branch to add streaming. We'll aim to include it with the next release.

could be very useful for tailing audit logs to a "security team" channel or something like that.

Thanks for the vote; I've created a Github issue to track implementation of a streaming feature here: https://github.com/vektorlab/slackcat/issues/9

Here, try this other slackcat.

https://github.com/skattyadz/slackcat

tail -F logfile | grep --line-buffered -v '^\s*$' | slackcat